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hinch · **Joined:** Tue Sep 09, 2008 5:29 pm **Posts:** 52

Simple task I did years ago in another language but cannot find the code for it any more

when left arrow is pressed I need to reduce the angle so if we start at 0 degree's then pressing left arrow will work back from 359 358 etc and if i press the right arrow it increases the angle so starting at 0 i go 1 2 3 etc.

sounds simple but i'll be damned if i can work it out.

pablissimo · **Joined:** Wed Sep 10, 2008 7:35 am **Posts:** 2

Code:

const float ROT_PER_STEP_DEGREES = 0.05f;
float m_currentAngle = 0f;

// Whatever left-arrow event handler:
m_currentAngle = ( m_currentAngle - ROT_PER_STEP_DEGREES ) % 360;

// Whatever right-arrow event handler:
m_currentAngle = ( m_currentAngle + ROT_PER_STEP_DEGREES ) % 360;

?

hinch · **Joined:** Tue Sep 09, 2008 5:29 pm **Posts:** 52

may work will have to look at it later i'm also considering building in a rotation acceleration routine so short press is short degree move long press is faster/larger movement in same time.